ClinVar Miner

Submissions for variant NM_006772.3(SYNGAP1):c.1474A>G (p.Lys492Glu)

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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV003616462 SCV004427453 uncertain significance Intellectual disability, autosomal dominant 5 2023-01-10 criteria provided, single submitter clinical testing In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt SYNGAP1 protein function. This variant has not been reported in the literature in individuals affected with SYNGAP1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces lysine, which is basic and polar, with glutamic acid, which is acidic and polar, at codon 492 of the SYNGAP1 protein (p.Lys492Glu).
3billion RCV003616462 SCV005328550 likely benign Intellectual disability, autosomal dominant 5 2024-09-20 criteria provided, single submitter clinical testing The variant was identified in at least one patient who was diagnosed with a different variant in another gene and showed no symptoms related to the gene containing the variant in question.

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